The threshold wavelength for photoelectric from a material is $5200\mathring{A}$ photoelectric will be emittillumnated with when this meterial is illiuminated with monecharnatic radiation from a

Answer: C::DSolution: The thereshould wavelength also depands is $5200\mathring{A}$ for ejection of electrons the wavwlength of the liught should be loss thasn $5200\mathring{A}$ as that frequency increases and bance the energy of ncident photo increases U V light has less wavelength than $5200\mathring{A}$